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https://issues.apache.org/jira/browse/HDFS-12484?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Wei-Chiu Chuang updated HDFS-12484:
-----------------------------------
Attachment: HDFS-12484.001.patch
Posted a test to reproduce the error. Updated the doc to add a note about this
issue.
In fact the command does not fail, but it logs an annoying warning message that
suggests something is really wrong:
{noformat}
2017-09-21 01:22:44,744 [main] WARN hdfs.DFSClient
(DistributedFileSystem.java:getTrashRoots(2795)) - Cannot get all encrypted
trash roots
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.AccessControlException):
Access denied for user user. Superuser privilege is required
at
org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkSuperuserPrivilege(FSPermissionChecker.java:130)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkSuperuserPrivilege(FSNamesystem.java:4556)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.listEncryptionZones(FSNamesystem.java:7048)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.listEncryptionZones(NameNodeRpcServer.java:2053)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.listEncryptionZones(ClientNamenodeProtocolServerSideTranslatorPB.java:1477)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:523)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:991)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:869)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:815)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1962)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2675)
at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1490)
at org.apache.hadoop.ipc.Client.call(Client.java:1436)
at org.apache.hadoop.ipc.Client.call(Client.java:1346)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:228)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:116)
at com.sun.proxy.$Proxy25.listEncryptionZones(Unknown Source)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.listEncryptionZones(ClientNamenodeProtocolTranslatorPB.java:1510)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:422)
at
org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:165)
at
org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:157)
at
org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:359)
at com.sun.proxy.$Proxy29.listEncryptionZones(Unknown Source)
at
org.apache.hadoop.hdfs.protocol.EncryptionZoneIterator.makeRequest(EncryptionZoneIterator.java:51)
at
org.apache.hadoop.hdfs.protocol.EncryptionZoneIterator.makeRequest(EncryptionZoneIterator.java:33)
at
org.apache.hadoop.fs.BatchedRemoteIterator.makeRequest(BatchedRemoteIterator.java:77)
at
org.apache.hadoop.fs.BatchedRemoteIterator.makeRequestIfNeeded(BatchedRemoteIterator.java:85)
at
org.apache.hadoop.fs.BatchedRemoteIterator.hasNext(BatchedRemoteIterator.java:99)
at
org.apache.hadoop.hdfs.DistributedFileSystem.getTrashRoots(DistributedFileSystem.java:2773)
at
org.apache.hadoop.fs.TrashPolicyDefault.deleteCheckpoint(TrashPolicyDefault.java:196)
at org.apache.hadoop.fs.Trash.expunge(Trash.java:120)
at
org.apache.hadoop.fs.shell.Delete$Expunge.processArguments(Delete.java:247)
at
org.apache.hadoop.fs.shell.FsCommand.processRawArguments(FsCommand.java:119)
at org.apache.hadoop.fs.shell.Command.run(Command.java:176)
at org.apache.hadoop.fs.FsShell.run(FsShell.java:326)
{noformat}
> hdfs dfs -expunge requires superuser permission after 2.8
> ---------------------------------------------------------
>
> Key: HDFS-12484
> URL: https://issues.apache.org/jira/browse/HDFS-12484
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: fs
> Affects Versions: 2.8.0, 3.0.0-alpha1
> Reporter: Wei-Chiu Chuang
> Assignee: Wei-Chiu Chuang
> Attachments: HDFS-12484.001.patch
>
>
> Hadoop 2.8 added a feature to support trash inside encryption zones, which is
> a great feature to have.
> However, it breaks the existing -expunge semantics because now a user must
> have superuser permission in order to -expunge. The reason behind that is
> that -expunge gets all encryption zone paths using
> DFSClient#listEncryptionZones, which requires super user permission.
> Not sure what's the best way to address this, so file this jira to invite
> comments.
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